Hi,
i am very long time trying to get best from new 802.11n technology using Mikrotik. There is very noticeable improvement in version 5.4 generaly. It looks like it has better CCQ and holds higher data rates. Looks like it better understands what other site sends.
Using 2x433AH + R52Ncards + very perfect 24dB and good isolated dual polarisation antenas.
All tests done on simple way :
local WWW server <-> 433AH AP<-> 433AH Client<-> PC just using multiple http downloads
Signal 47/48dB
Run short ping 100x second before each test to get the best wirelles rate, than stoped and run the download test
The best what i can achieve is with 40MHz channel, using nv2 and single chain. It makes 100/100CCQ and holds rock solid 150/150Mbit (before 5.4 just 130/130 in nv2). The download speed comes to 68-83Mbit and looks to be good.
Any other combination was not able to run as fast. Dual chain 40Mbit channel has poor CCQ just over 40/40, and even at modulation speeds 300/300Mbit is not able to deliver more than very unstable 28-48Mbit.
I realy dont know what iam doing bad, because i was not able to achieve good resluts on dual chain outdoors. The single chain is always more stable and has more troughput. Many locations even 50km away, and always the same result.
Anybody an ideas ?